Finding the Fourth Proportional to 1,665.50, 2,298.58 and 1,385.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.50 : 2,298.58 = 1,385.24 : x
2. Step 2: Convert to fraction form
   1,665.50/2,298.58 = 1,385.24/x
3. Step 3: Cross multiply
   1,665.50x = 2,298.58 × 1,385.24
4. Step 4: Simplify right side
   1,665.50x = 3,184,070.00
5. Step 5: Solve for x
   x = 3,184,070.00/1,665.50
6. Step 6: Final answer
   x = 1,911.79